Abstract: The disclosure pertains to conjugates of the capsular polysaccharide of Vibrio cholerae O139, or a structurally and/or immunologically related oligo- or poly-saccharide, and a carrier. These conjugates are useful as pharmaceutical compositions and/or vaccines to induce serum antibodies which have bactericidal (vibriocidal) activity against V. cholerae, in particular V. cholerae O139, and are useful to prevent, treat and/or reduce the severity of disease caused by V. cholerae infection, such as cholera. The present disclosure also relates to diagnostic tests for V. cholerae infection, and/or cholera caused by V. cholerae infection, using one or more of the oligo- or poly-saccharide-carrier conjugates or antibodies described above.

Abstract: Disclosed are immunogenic conjugates and therapeutic compositions that include such immunogenic conjugates. Also disclosed are methods of treating and/or inhibiting an Shigella sonnei infection. The disclosed immunogenic conjugates have the general structure: Pr—Sr—O—N?C-Kdo-OS wherein Pr is a carrier protein, Sr is an optional spacer moiety, Kdo is an 3-deoxy-D-manno-octulosonic acid or a derivative thereof, and OS is an oligosaccharide or polysaccharide obtained from S. sonnei. In specific examples, the immunogenic conjugates include the core oligosaccharide obtained from S. sonnei having the structure: wherein R is between 1 and 10 disaccharide repeat units. In specific examples, the disaccharide repeat unit included in the immunogenic conjugate has the structure: ?-L-AltNAcA-3-?-FucNAc4N-4-.

Abstract: Disclosed are immunogenic conjugates which elicit an immune response to Plasmodium proteins. In particular examples, the Plasmodium proteins include sexual stage surface proteins, circumsporozoite protein (CSP), or immunogenic portions of CSP. Also provided herein are immunogenic compositions including one or more of the disclosed immunogenic conjugates and a pharmaceutically acceptable carrier. Further provided is a method of eliciting an immune response to Plasmodium in a subject, comprising administering to the subject an immunogenic composition disclosed herein.

Abstract: Provided are immunogenic compositions and methods for eliciting an immune response against B. anthracis and other bacteria that contain 3-methyl-3-hydroxybutyrate- or 3-hydroxybutyrate-substituted saccharides. Conjugates of 3-methyl-3-hydroxybutyrate- or 3-hydroxybutyrate-substituted saccharides elicit an effective immune response against B. anthracis spores in mammalian hosts to which the conjugates are administered.

Abstract: Conjugates of ookinete surface protein Pfs25 are provided that are efficacious as vaccines against Plasmodium falciparum, the most severe form of malaria. Conjugates of ookinete surface protein Pvs25 for use as a vaccine against Plasmodium vivax are also provided. Methods for preparing the conjugates, which comprise the ookinete surface protein bound onto itself or onto another protein by a linking group, are also provided.

Abstract: Provided are immunogenic compositions and methods for eliciting an immune response against B. anthracis and other bacteria that contain 3-methyl-3-hydroxybutyrate- or 3-hydroxybutryate-substituted saccharides. Conjugates of 3-methyl-3-hydroxybutyrate- or 3-hydroxybutryate-substituted saccharides elicit an effective immune response against B. anthracis spores in mammalian hosts to which the conjugates are administered.

Abstract: Conjugates of ookinete surface protein Pfs25 are provided that are efficacious as vaccines against Plasmodium falciparum, the most severe form of malaria. Conjugates of ookinete surface protein Pvs25 for use as a vaccine against Plasmodium vivax are also provided. Methods for preparing the conjugates, which comprise the ookinete surface protein bound onto itself or onto another protein by a linking group, are also provided.

Abstract: The disclosure pertains to conjugates of the capsular polysaccharide of Vibrio cholerae O139, or a structurally and/or immunologically related oligo- or poly-saccharide, and a carrier. These conjugates are useful as pharmaceutical compositions and/or vaccines to induce serum antibodies which have bactericidal (vibriocidal) activity against V. cholerae, in particular V. cholerae O139, and are useful to prevent, treat and/or reduce the severity of disease caused by V. cholerae infection, such as cholera. The present disclosure also relates to diagnostic tests for V. cholerae infection, and/or cholera caused by V. cholerae infection, using one or more of the oligo- or poly-saccharide-carrier conjugates or antibodies described above.

Abstract: The disclosure pertains to conjugates of the capsular polysaccharide of Vibrio cholerae O139, or a structurally and/or immunologically related oligo- or poly-saccharide, and a carrier. These conjugates are useful as pharmaceutical compositions and/or vaccines to induce serum antibodies which have bactericidal (vibriocidal) activity against V. cholerae, in particular V. cholerae O139, and are useful to prevent, treat and/or reduce the severity of disease caused by V. cholerae infection, such as cholera. The present disclosure also relates to diagnostic tests for V. cholerae infection, and/or cholera caused by V. cholerae infection, using one or more of the oligo- or poly-saccharide-carrier conjugates or antibodies described above.

Abstract: Disclosed are immunogenic conjugates and therapeutic compositions that include such immunogenic conjugates. Also disclosed are methods of treating and/or inhibiting an Shigella sonnei infection. The disclosed immunogenic conjugates have the general structure: Pr-Sr-O—N?C-Kdo-OS wherein Pr is a carrier protein, Sr is an optional spacer moiety, Kdo is an 3-deoxy-D-manno-octulosonic acid or a derivative thereof, and OS is an oligosaccharide or polysaccharide obtained from S. sonnei. In specific examples, the immunogenic conjugates include the core oligosaccharide obtained from S. sonnei having the structure: wherein R is between 1 and 10 disaccharide repeat units. In specific examples, the disaccharide repeat unit included in the immunogenic conjugate has the structure: ?-L-AltNAcA-3-?-FucNAc4N-4-.

Abstract: Disclosed are immunogenic conjugates having the general formula: M2e-Cys-S—CH2—C(O)—NH—CH2—CH2-C(O—)NH-Lys-Pr, were M2e is the influenza M2 ectodomain (M2e) peptide; Cys is a cysteine amino acid residue present in the M2e peptide; S the sulfur present in the cysteine amino acid residue; CH2-CO—NH—CH2-CH2-CO the linking group; NH the amine group present in a lysine residue of the carrier; Lys is a lysine amino acid residue and Pr the carrier protein. Also disclosed are isolated immunogens that include an immunogenic fragment of an influenza HA protein including the polybasic cleavage site, wherein the immunogenic fragment of the influenza HA protein has been modified to remove an N-terminal leader amino acid sequence and a C-terminal transmembrane domain. Also disclosed are methods producing an influenza vaccine specific for an identified influenza strain.

Abstract: Disclosed are immunogenic conjugates and therapeutic compositions that include such immunogenic conjugates. Also disclosed are methods of treating and/or inhibiting an Shigella sonnei infection. The disclosed immunogenic conjugates have the general structure: Pr—Sr—O—N?C-Kdo-OS wherein Pr is a carrier protein, Sr is an optional spacer moiety, Kdo is an 3-deoxy-D-manno-octulosonic acid or a derivative thereof, and OS is an oligosaccharide or polysaccharide obtained from S. sonnei. In specific examples, the immunogenic conjugates include the core oligosaccharide obtained from S. sonnei having the structure: wherein R is between 1 and 10 disaccharide repeat units. In specific examples, the disaccharide repeat unit included in the immunogenic conjugate has the structure: ?-L-AltNAcA-3-?-FucNAc4N-4-.

Abstract: The invention relates to improved methods of producing and recovering B. anthracis protective antigen (PA), especially modified PA which is protease resistant, and to methods of using of these PAs or nucleic acids encoding these PAs for eliciting an immunogenic response in humans, including responses which provide protection against, or reduce the severity of, B. anthracis bacterial infections and which are useful to prevent and/or treat illnesses caused by B. anthracis, such as inhalation anthrax, cutaneous anthrax and gastrointestinal anthrax.

Abstract: Disclosed are immunogenic conjugates having the general formula: M2e-Cys-S—CH2—C(O)—NH—CH2—CH2-C(O—)NH-Lys-Pr, were M2e is the influenza M2 ectodomain (M2e) peptide; Cys is a cysteine amino acid residue present in the M2e peptide; S the sulfur present in the cysteine amino acid residue; CH2-CO—NH—CH2-CH2-CO the linking group; NH the amine group present in a lysine residue of the carrier; Lys is a lysine amino acid residue and Pr the carrier protein. Also disclosed are isolated immunogens that include an immunogenic fragment of an influenza HA protein including the polybasic cleavage site, wherein the immunogenic fragment of the influenza HA protein has been modified to remove an N-terminal leader amino acid sequence and a C-terminal transmembrane domain. Also disclosed are methods producing an influenza vaccine specific for an identified influenza strain.

Abstract: Provided are immunogenic compositions and methods for eliciting an immune response against B. anthracis and other bacteria that contain 3-methyl-3-hydroxybutyrate- or 3-hydroxybutryate-substituted saccharides. Conjugates of 3-methyl-3-hydroxybutyrate- or 3-hydroxybutryate-substituted saccharides elicit an effective immune response against B. anthracis spores in mammalian hosts to which the conjugates are administered.

Abstract: Methods for making an immunogenic conjugate that includes a hapten or an antigen covalently linked to a carrier. The methods include reacting a first agent with a dihydrazide resulting in a hydrazine-modified first agent, wherein the first agent is a hapten, an antigen or a carrier; reacting a second agent with a benzaldehyde compound resulting in a benzaldehyde-modified second agent, wherein the second agent is a hapten, an antigen or a carrier, provided that the first agent or the second agent is a carrier; and reacting the hydrazine-modified first agent with the benzaldehyde-modified second agent resulting in an immunogenic conjugate comprising a hapten or an antigen covalently linked to a carrier via a hydrazone linkage.

Abstract: Disclosed are immunogenic conjugates which elicit an immune response to Plasmodium proteins. In particular examples, the Plasmodium proteins include sexual stage surface proteins, circumsporozoite protein (CSP), or immunogenic portions of CSP. Also provided herein are immunogenic compositions including one or more of the disclosed immunogenic conjugates and a pharmaceutically acceptable carrier. Further provided is a method of eliciting an immune response to Plasmodium in a subject, comprising administering to the subject an immunogenic composition disclosed herein.

Abstract: The invention relates to improved methods of producing and recovering sporulation-deficient B. anthracis mutant stains, and for producing and recovering recombinant B. anthracis protective antigen (PA), especially modified PA which is protease resistant, and to methods of using of these PAs or nucleic acids encoding these PAs for eliciting an immunogenic response in humans, including responses which provide protection against, or reduce the severity of, B. anthracis bacterial infections and which are useful to prevent and/or treat illnesses caused by B. anthracis, such as inhalation anthrax, cutaneous anthrax and gastrointestinal anthrax.

Abstract: The invention relates to improved methods of producing and recovering sporulation-deficient B. anthracis mutant stains, and for producing and recovering recombinant B. anthracis protective antigen (PA), especially modified PA which is protease resistant, and to methods of using of these PAs or nucleic acids encoding these PAs for eliciting an immunogenic response in humans, including responses which provide protection against, or reduce the severity of, B. anthracis bacterial infections and which are useful to prevent and/or treat illnesses caused by B. anthracis, such as inhalation anthrax, cutaneous anthrax and gastrointestinal anthrax.

Abstract: Conjugates of ookinete surface protein Pfs25 are provided that are efficacious as vaccines against Plasmodium falciparum, the most severe form of malaria. Conjugates of ookinete surface protein Pvs25 for use as a vaccine against Plasmodium vivax are also provided. Methods for preparing the conjugates, which comprise the ookinete surface protein bound onto itself or onto another protein by a linking group, are also provided.